High powered steam engines, such as locomotive engines



J. KUPKA 399359353 SUCH AS LOCOMOTIVE ENGINES Novo ML, E933 H-*IGHPOWERED STEAM ENGINES b'iled Nov. 27, 1931 2 Sheets-Sheet l J. KUPKA19935363 SUCH AS LOCOMOTIVE ENGINES Nov. I4, 3933.

2 ,sheets-sheet 2 HIGH POWERED STEAM ENGINES Filed NOV. 27, 1931directly to said cylinders,

mission steam chambers of said cylinders from.

being cooled through contact with said exhaust conduits, and meanswhereby decarbonizing of the surfaces of said exhaust valves may beeiected without removing said exhaust valves from their seats.

2. In a high powered steam engine, two cylinders, conduits forconducting steam from a boiler a central cylindrical reservoir betweensaid cylinders connected with and common to the steam conduits of bothcylinders, said cylinders and central reservoir comprising a unitarystructure of maximum compactness, exhaust conduits, exhaust valvescontrolling said exhaust conduits, means for preventing the admimionsteam chambers oi said cylinders from being cooled through contact withsaid exhaust conduits, and means whereby decarbonizing of the surfacesof said exhaust valves may be eiected without removing said exhaustvalves from their seats.

3. In a high powered steam engine, two cylinders, conduits :forconducting steam from a boiler directly to said cylinders, a centralcylindrical reservoir between said cylinders connected with said steamconduits, said central reservoir being coaxial with the longitudinalaxis of the engine, and in combination with said steam cylinderscomprising a unit of maximum compactness, exhaust conduits locatedexteriorly or" said unit and 'out of direct contact with the admissionsteam chambers of said cylinders, exhaust valves controlling saidexhaust conduits, and means whereby decarbonizing of the surfaces ofsaid exhaust valves may be effected without removing said valves fromtheir seats.

4. In a high powered steam engine, two cylinders, conduits forconducting steam from a boiler directly to said cylinders, a centralcylindrical reservoir between said cylinders connected with saidv steamconduits, said central reservoir being coaxial with the longitudinalaxis of the engine, and in combination with said steam cylinderscomprising a unit of maximum compactness, exhaust conduits locatedexteriorly of said unit and out of direct contact with the admissionsteam chambers of ,said cylinders, two twin exhaust poppet valves foreach steam cylinder, and means whereby decarbonizing of the surfaces ofsaid exhaust valves may be effected Without removing said valves fromtheir seats.

5. In a high powered steam engine, two cylinders, conduits forconducting steam from a boiler directly to said cylinders, a centralcylindrical reservoir between saidcylinders connected with said steamconduits, said central reservoir being coaxial with the longitudinalaxis of the engine, and in combination with said steam cylinderscomprising a unit of maximum compactness, exhaust conduits locatedexteriorly of said unit and out of direct contact with the admissionsteam chambers of said cylinders, two twin exhaust poppet valves foreach steam cylinder, the wall of each exhaust conduit beingI providedwith an aperture accessible from the outside, a removable cover for eachof said apertures for giving access to said exhaust valves when thelatter are on their seats and thereby permitting said valves to bedecarbonized prior to their removal.

JOHANN KUPKA.

